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/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2010 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2009 Oak Ridge National Labs. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#if !defined(MEM_OP_NAME)
#error
#endif /* !defined((MEM_OP_NAME) */
#if !defined(MEM_OP)
#error
#endif /* !defined(MEM_OP) */
#ifndef STRINGIFY
# define STRINGIFY_(arg) #arg
# define STRINGIFY(arg) STRINGIFY_(arg)
#endif
#ifndef DT_CONCAT
# define DT__CONCAT(a, b) a##b
# define DT_CONCAT(a, b) DT__CONCAT(a, b)
#endif
#define _predefined_data DT_CONCAT(MEM_OP_NAME,_predefined_data)
#define _contiguous_loop DT_CONCAT(MEM_OP_NAME,_contiguous_loop)
#define _copy_content_same_ddt DT_CONCAT(MEM_OP_NAME,_copy_content_same_ddt)
static inline void _predefined_data( const dt_elem_desc_t* ELEM,
const opal_datatype_t* DATATYPE,
unsigned char* SOURCE_BASE,
int32_t TOTAL_COUNT,
uint32_t COUNT,
unsigned char* SOURCE,
unsigned char* DESTINATION,
size_t* SPACE )
{
uint32_t _copy_count = (COUNT);
size_t _copy_blength;
const ddt_elem_desc_t* _elem = &((ELEM)->elem);
unsigned char* _source = (SOURCE) + _elem->disp;
unsigned char* _destination = (DESTINATION) + _elem->disp;
_copy_blength = opal_datatype_basicDatatypes[_elem->common.type]->size;
if( _copy_blength == (uint32_t)_elem->extent ) {
_copy_blength *= _copy_count;
OPAL_DATATYPE_SAFEGUARD_POINTER( _source, _copy_blength, (SOURCE_BASE),
(DATATYPE), (TOTAL_COUNT) );
/* the extent and the size of the basic datatype are equals */
DO_DEBUG( opal_output( 0, "copy 1. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), _destination, _source, (unsigned long)_copy_blength, (unsigned long)(*(SPACE)) ); );
MEM_OP( _destination, _source, _copy_blength );
_source += _copy_blength;
_destination += _copy_blength;
} else {
uint32_t _i;
for( _i = 0; _i < _copy_count; _i++ ) {
OPAL_DATATYPE_SAFEGUARD_POINTER( _source, _copy_blength, (SOURCE_BASE),
(DATATYPE), (TOTAL_COUNT) );
DO_DEBUG( opal_output( 0, "copy 2. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), _destination, _source, (unsigned long)_copy_blength, (unsigned long)(*(SPACE) - (_i * _copy_blength)) ); );
MEM_OP( _destination, _source, _copy_blength );
_source += _elem->extent;
_destination += _elem->extent;
}
_copy_blength *= _copy_count;
}
*(SPACE) -= _copy_blength;
}
static inline void _contiguous_loop( const dt_elem_desc_t* ELEM,
const opal_datatype_t* DATATYPE,
unsigned char* SOURCE_BASE,
int32_t TOTAL_COUNT,
uint32_t COUNT,
unsigned char* SOURCE,
unsigned char* DESTINATION,
size_t* SPACE )
{
ddt_loop_desc_t *_loop = (ddt_loop_desc_t*)(ELEM);
ddt_endloop_desc_t* _end_loop = (ddt_endloop_desc_t*)((ELEM) + _loop->items);
unsigned char* _source = (SOURCE) + _end_loop->first_elem_disp;
unsigned char* _destination = (DESTINATION) + _end_loop->first_elem_disp;
size_t _copy_loops = (COUNT);
uint32_t _i;
if( _loop->extent == (OPAL_PTRDIFF_TYPE)_end_loop->size ) { /* the loop is contiguous */
_copy_loops *= _end_loop->size;
OPAL_DATATYPE_SAFEGUARD_POINTER( _source, _copy_loops, (SOURCE_BASE),
(DATATYPE), (TOTAL_COUNT) );
MEM_OP( _destination, _source, _copy_loops );
} else {
for( _i = 0; _i < _copy_loops; _i++ ) {
OPAL_DATATYPE_SAFEGUARD_POINTER( _source, _end_loop->size, (SOURCE_BASE),
(DATATYPE), (TOTAL_COUNT) );
DO_DEBUG( opal_output( 0, "copy 3. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), _destination, _source, (unsigned long)_end_loop->size, (unsigned long)(*(SPACE) - _i * _end_loop->size) ); );
MEM_OP( _destination, _source, _end_loop->size );
_source += _loop->extent;
_destination += _loop->extent;
}
_copy_loops *= _end_loop->size;
}
*(SPACE) -= _copy_loops;
}
static inline int32_t _copy_content_same_ddt( const opal_datatype_t* datatype, int32_t count,
char* destination_base, char* source_base )
{
dt_stack_t* pStack; /* pointer to the position on the stack */
int32_t stack_pos; /* index of the stack level */
uint32_t pos_desc; /* actual position in the description of the derived datatype */
uint32_t count_desc; /* the number of items already done in the actual pos_desc */
dt_elem_desc_t* description;
dt_elem_desc_t* pElem;
size_t iov_len_local;
unsigned char *source = (unsigned char*)source_base,
*destination = (unsigned char*)destination_base;
DO_DEBUG( opal_output( 0, "_copy_content_same_ddt( %p, %d, dst %p, src %p )\n",
(void*)datatype, count, destination_base, source_base ); );
iov_len_local = count * datatype->size;
/* If we have to copy a contiguous datatype then simply
* do a MEM_OP.
*/
if( datatype->flags & OPAL_DATATYPE_FLAG_CONTIGUOUS ) {
OPAL_PTRDIFF_TYPE extent = (datatype->ub - datatype->lb);
/* Now that we know the datatype is contiguous, we should move the 2 pointers
* source and destination to the correct displacement.
*/
destination += datatype->true_lb;
source += datatype->true_lb;
if( (OPAL_PTRDIFF_TYPE)datatype->size == extent ) { /* all contiguous == no gaps around */
size_t total_length = iov_len_local;
size_t memop_chunk = opal_datatype_memop_block_size;
while( total_length > 0 ) {
if( memop_chunk > total_length ) memop_chunk = total_length;
OPAL_DATATYPE_SAFEGUARD_POINTER( destination, memop_chunk,
(unsigned char*)destination_base, datatype, count );
OPAL_DATATYPE_SAFEGUARD_POINTER( source, memop_chunk,
(unsigned char*)source_base, datatype, count );
DO_DEBUG( opal_output( 0, "copy c1. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), destination, source, (unsigned long)memop_chunk, (unsigned long)total_length ); );
MEM_OP( destination, source, memop_chunk );
destination += memop_chunk;
source += memop_chunk;
total_length -= memop_chunk;
}
return 0; /* completed */
}
for( pos_desc = 0; (int32_t)pos_desc < count; pos_desc++ ) {
OPAL_DATATYPE_SAFEGUARD_POINTER( destination, datatype->size,
(unsigned char*)destination_base, datatype, count );
OPAL_DATATYPE_SAFEGUARD_POINTER( source, datatype->size,
(unsigned char*)source_base, datatype, count );
DO_DEBUG( opal_output( 0, "copy c2. %s( %p, %p, %lu ) => space %lu\n",
STRINGIFY(MEM_OP_NAME), destination, source, (unsigned long)datatype->size,
(unsigned long)(iov_len_local - (pos_desc * datatype->size)) ); );
MEM_OP( destination, source, datatype->size );
destination += extent;
source += extent;
}
return 0; /* completed */
}
pStack = (dt_stack_t*)alloca( sizeof(dt_stack_t) * (datatype->btypes[OPAL_DATATYPE_LOOP] + 1) );
pStack->count = count;
pStack->index = -1;
pStack->disp = 0;
pos_desc = 0;
stack_pos = 0;
if( datatype->opt_desc.desc != NULL ) {
description = datatype->opt_desc.desc;
} else {
description = datatype->desc.desc;
}
if( description[0].elem.common.type == OPAL_DATATYPE_LOOP )
count_desc = description[0].loop.loops;
else
count_desc = description[0].elem.count;
pElem = &(description[pos_desc]);
while( 1 ) {
while( OPAL_LIKELY(pElem->elem.common.flags & OPAL_DATATYPE_FLAG_DATA) ) {
/* now here we have a basic datatype */
_predefined_data( pElem, datatype, (unsigned char*)source_base, count, count_desc,
source, destination, &iov_len_local );
pos_desc++; /* advance to the next data */
UPDATE_INTERNAL_COUNTERS( description, pos_desc, pElem, count_desc );
}
if( OPAL_DATATYPE_END_LOOP == pElem->elem.common.type ) { /* end of the current loop */
DO_DEBUG( opal_output( 0, "copy end_loop count %d stack_pos %d pos_desc %d disp %ld space %lu\n",
(int)pStack->count, stack_pos, pos_desc, (long)pStack->disp, (unsigned long)iov_len_local ); );
if( --(pStack->count) == 0 ) { /* end of loop */
if( stack_pos == 0 ) {
assert( iov_len_local == 0 );
return 0; /* completed */
}
stack_pos--;
pStack--;
pos_desc++;
} else {
pos_desc = pStack->index + 1;
if( pStack->index == -1 ) {
pStack->disp += (datatype->ub - datatype->lb);
} else {
assert( OPAL_DATATYPE_LOOP == description[pStack->index].loop.common.type );
pStack->disp += description[pStack->index].loop.extent;
}
}
source = (unsigned char*)source_base + pStack->disp;
destination = (unsigned char*)destination_base + pStack->disp;
UPDATE_INTERNAL_COUNTERS( description, pos_desc, pElem, count_desc );
DO_DEBUG( opal_output( 0, "copy new_loop count %d stack_pos %d pos_desc %d disp %ld space %lu\n",
(int)pStack->count, stack_pos, pos_desc, (long)pStack->disp, (unsigned long)iov_len_local ); );
}
if( OPAL_DATATYPE_LOOP == pElem->elem.common.type ) {
OPAL_PTRDIFF_TYPE local_disp = (OPAL_PTRDIFF_TYPE)source;
if( pElem->loop.common.flags & OPAL_DATATYPE_FLAG_CONTIGUOUS ) {
_contiguous_loop( pElem, datatype, (unsigned char*)source_base, count, count_desc,
source, destination, &iov_len_local );
pos_desc += pElem->loop.items + 1;
goto update_loop_description;
}
local_disp = (OPAL_PTRDIFF_TYPE)source - local_disp;
PUSH_STACK( pStack, stack_pos, pos_desc, OPAL_DATATYPE_LOOP, count_desc,
pStack->disp + local_disp);
pos_desc++;
update_loop_description: /* update the current state */
source = (unsigned char*)source_base + pStack->disp;
destination = (unsigned char*)destination_base + pStack->disp;
UPDATE_INTERNAL_COUNTERS( description, pos_desc, pElem, count_desc );
DDT_DUMP_STACK( pStack, stack_pos, pElem, "advance loop" );
continue;
}
}
}
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